The # symbol, called a hashtag, is used to mark keywords or categories in a Tweet
You can use the hashtag symbol # before a relevant keyword or phrase (no spaces) to categorise your Tweets making them easier to find in Twitter Search.
Clicking on a hashtagged word in any message shows you all other Tweets marked with that keyword.You can place a # anywhere in your Tweet – at the beginning, middle, or end. Hashtagged words that become very popular can become Trending Topics
So here is an example Tweet
It contains clickable links to #UKStorm2013 and #PowerPoint
- Don’t use too many hashtags in a single tweet (Twitter recommends no more than 2)
- Use hashtags that are relevant to your topic
- Check what other people are using a hashtag for before you decide to use it